ATM UB-1260 Installation Guide

Figure 1 Figure 2

U-Bracket Speaker Mount

Installation Instructions UB-1260

This U-Bracket attaches one loudspeaker to a wall, deck, ceiling, or balcony
and provides an aiming feature.

Warning:

Mounting and/or rigging loudspeakers requires experienced professionals.

Improperly installed loudspeakers can result in property damage,
personal injury, death and/or liability to the installing contractor.

Note to Contractor: Due to the wide variety of wall structures, materials

and methods, these instructions assume that the contractor will exercise
good judgment in selecting the proper mounting area and hardware. Do
not rely on drywall, acoustic tiles, etc. to support the weight of any
loudspeaker.

To assure a trouble free installation, read through and follow these instructions carefully before beginning. If you have
doubts about the integrity of the structure you are mounting to, or you are not sure about the proper hardware to use,
consult a structural and/or hardware specialist. As a guide, when complete, the installation should be capable of
supporting between 5 to 10 times the actual applied load. The use a back up safety system, such as a safety cable, is
highly recommended. Standard safety cables are available from stock.

Contents: U- Bracket Speaker Mount 2 pcs. Hardware kit 2 pcs.
Instruction Sheet 1 pc.

Step 1. Place the U-Bracket over the speaker cabinet to be sure you have the correct mount. Sound isolation

gaskets are placed between the loudspeaker cabinet and the U-Bracket’s arms and fill any gaps, up to

3/8” per side. Also, compare the included assembly hardware with that of the loudspeaker. If threaded

mounting points are not provided by the manufacturer contact them for the correct mounting procedure.

Step 2. Select the mounting area where the loudspeaker will be installed. Attach the base of the U-Bracket to the

wall or ceiling using the appropriate hardware for the application (if in doubt, consult a local hardware
specialist). Tighten permanently.

Step 3. Place the speaker between the U-Bracket’s arms. Insert a hex bolt, flat washer and lock washer (must

match the speaker’s thread) through the desired slot in one of the arms with the sound isolation gasket,
(select either a 1/8”, 1/4” thick or both per end), threading the bolt into the loudspeaker. Repeat on the

other side of the speaker.

Step 4. Rotate the loudspeaker

into the desired direction
then tighten the side
bolts permanently. To
permanently set the
speaker angle, insert the
included lag bolts
through the unused arm
slots and into the
loudspeaker cabinet.
(

See figure 2

Step 5. Recommendation: Safety

Cable

Install a safety cable to the U­Bracket and to the mounting
surface.

)

(See figure 1)

Do not fully tighten yet.

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